Construction of window frames and sashes



Aug. 11, 1925;

'. H. E. CAMPBELL CONSTRUCTION OF WINDOW FRAMES AND SASHES Filed Feb, 11, 1924 3 Sheets-Sheet l ATTORNEYS H. E. CAMPBELL CONSTRUCTION OF WINDOW FRAMES AND SASHES. 1

Filed Feb. 11, 192 4 s sheetsrshe t 2 INVENTOR M 7 1 W1 WM H ATTORNEYS Aug. 11, 1925. 1,549,711

H. E. CAMPBELL CONSTRUCTION OF WINDOW FRAMES AND SASHE 5 Sheets-Shet 5 Filed Feb. 11, 1924 WWW i f MHHHHHilwull ilmui INVEINTOR Am a k BY M NIGIW ATTORNEYS Patented Aug. 11, 1 925.

UNITED STATES PATENT orr es. I

HARRY E. CAMPBELL, or BALTIMORE, MARYLAND, ssrenon TO CAMPBELL METAL wmnow CORPORATION, or BA TIMORE, MARYLAND, A CORPORATION or MARY- AND.

oonspmuo'rron or wmnow FRAMES Ann sAsiIEsj .Application fil'ed February 11,1924. SerialNo. 691,890.

To all whomc't may concern:

Be' it known that I, HARRY E. CAMPBELL, a citizen of the United States, and a resident of Baltimore, county of Baltimore City, and State of Marylaud, have invented certain new and useful Improvements in the Construction of Window Frames and Sashes, of which the following is a specshown in the accompanying'drawings, an

application' of my invention to the general I type of window shown in certain of my earlier patents where plates projecting from the" sides of the sashes extend into slots formed in the inner wall of the jamb. In these drawings Fig. 1 is a sectional side view of a window embodying my invention; Fig. 2 is a section on line 22 of Fig. 1; Fig. 3 is a phantom view of an upper corner of the frame with the pulley wheels removed; Fig. 4 is a-phantom view of a lower corner "of the frame; Figs. 5 and? are detailed views showing .the manner in which thejamb is interlocked with the lintel and sill respec 'tively; Fig. 6 is a detailed View showing the manner in. which the pulley wheels may be attached, and Fig. 8 is an elevationof a casting which may be used at the bottom of the bafile plate. In the specimen window illustrated, the jamb is made up of a main box member 2,

to which is attached a hook shaped member 3. The hook member'3 has a short leg 4,

which forms a. portion of the inner jambwall, and a longer leg 5 which forms a par- .titon within the jamb so that member 3 may be' considered both as a jam wall member and as a partition member. A baffle 6 is attached to leg 5 of-member '3 and a sash guide 7 likewise is attached to leg 5. Both battle 6 and guide 7 are provided with screw 'holes somewhat larger than the screws which are to go' through them, so that these members may be adjusted in relation to leg 4. A cover plate 8 interlocks with the edge of .box 2 and fits into the hook end of guide 7. A weight separator 9 is attached to leg 5 but is made shorter than guide7 and is rovided with a keyhole opening 10 (see ig. 1) by which it is hungv in place.- Both cover plate 8 and separator 9 can be removed without disturbingthe position of guide 7 or bafile 6 and therefore the weights 11 and 12 can'be inserted without changing the ad'- justment of these parts.

The sill 13 has a vertical tending substantially the widt of the frame and has a fiat horizontal portion 15 of the same length; 7 The balance of the sill which is bent to form the groove '16, the ridge 17 and the ledge 18 is cut just. longenough to contact at each end witha long leg 5 of member 3 (see 4). The short leg 4 of member 3 is cut to fit the incline of ledge 18. A sill bracket .19 is attached to the underside of flat portion 15 of sill 13 and has a vertical portion 19' corresponding with ortion 14' of the sill. Extending forward rom flat portion 15 of sill 13, the bracket 19 is of sufiicient width to contact '3 to pass between the bracket and the sill 13. The ledge at the back of the slot thus formed is designated by the numeral 20.

At the time that member 3 is formed,

there is cut or stamped in its rear edge a notch 21 (see Fig. 7) and this notch is so positioned that when leg 5 is pushed into place, the notch will engage ledge 20 thereby holding member 5 in correct position relative to sill 13. Box 2 is so shaped as to come downaround the front and side of bracket 19. Along the back where box 2 rests on sill 13 the joints may be strengthened by the use of an angle bracket 22.

In assembling a lower corner, bracket 19 and sill 13 are first secured together, and then leg 5 is pushedinto place, with notch 21 engaging ledge 20. Member 3 is then se'cure'd, preferably by electrically welding the joint between leg 5 and bracket 19, for

this joint would be out of sight when the window is in use. Box 2 isvthen put in place and secured in any desired manner as by electric welding.

The lintel comprises a main lintel member 24 having a vertical side 25 and a slightly inclined side 26. The inclined side 26 is only of suflieient length to contact with legs opening cut in its rear edge to provide a place for one of the suspension pulleys, and at the upper corner of this opening there is formed a notch 29 which will interlock with main lintel member 2.4 when leg 5 is pushed into slot 27 (see Fig.5). An opening 30 for the second pulley wheel is likewise formedin leg 5 near its top. The pulley wheels 31 and 32 may either be se- -cured to leg 5 as shown in Fig. 8 or may be attached to the underside of lintel member 24. It may be noted that in the'illustrative example a portion of baille 7 is cut away to provide a space for pulley wheel 32 (see Figs. 2 and The lintel cover 34 has a vertical edge 35 to be secured to the side 25 of lintel member 24 and at its ends has downwardly bent flanges 36 which meet member 24. At the corners outside of members 3, lintel cover 34 likewise has downwardly bent flanges 37 which meet member 24. The main portion of lintel cover 24 runs forward as shown at 38, so that the upper end of member 3 is covered. This portion is then bent down as shown at 39 and then, an appropriate portion being cut away, is bent back at 40 and diagonally upward as at 41. The portions 40 and 41 are of such length as to have their edges in contact with short leg of member 3.

The upper corners are assembled by first pushing leg 5 of member 3 into slot 27 of lintel 24 and securing these members in place preferably by electric welding. Box 2 is then put in place and flange 28 is bent down and the joints secured in any desired manner as by welding. The pulley wheels 31 and 32 can then be -fastened in position and finally cover 34 is put'on and welded in place.

By the construction thus far described, I am assured that my window frame will be assembled with absolute accuracy, for the interlocking joints prevent any possibility of slippage during the welding operation. In addition, the interlocking joints are formed within the jambs so that the parts which are thus connected may be enclosed by other frame members. It may further be noted that a frame thus constructed has a certain degree of inherent rigidity, resulting from the manner in which the-interlocking joints are formed, which exists independent of the permanent attachment of the members by welding or the like. This inherent rigidity is due to the fact that at each corner member 3 which preferably is made of metal as heavy as 12 gauge bears against aligning portions of the member or members to which it is fastened. For example, at the lower corners, each member 3 is held against being bent out beyond the position in which it will form a right angle with sill 13 by virtue of the fact that it will bear against the edge of bracket 19 and the edge of ledge 18 so that when the two members 3 are held in parallel position, both must assume a position at right angles to the sill 13. In the same way, leg 5 of member 3 at the top bears against the upturned edge of portion of lintel member 24. It is thus apparent that when a frame is fully assembled following this illustrative example, it does not depend solely upon the strength of the welded joints for rigidity.

The sashes are of the general construction described in my earlier patents but embody iertain novel features which are shown in Here it will be noted that the lift rail at the bottom of the lower sash is formed of three pieces in addition to the lift handle. The member 44 which is part of the main sash frame comes down outside of ridge 17 in the usual way. Inside of this is the glass stop 45 which preferably is bent in and down to form the book 46. A member 47 is mounted against the glass stop 45 in such a way that its upper edge lies within the hook 46. The lower end of member 47 is bent in and down to fit into groove 16. In order that an exact lit may be obtained, the holes through which pass the screws that hold member 47 in place are made large enough so that they lit loosely about the screws. By this construction, member 47 can be moved up' and down so that it can be adjusted to exactly the proper position in relation to the sill. The arrangement shown also provides a lift rail having a very desirable degree of stiffness.

The meeting rail of the lower sash comprises a main sash frame member 50 and a glass stop 51 that is bent out and down as shown in Fig. 1. A zinc weather strip 52 bent to receive meeting rail member 53 of the upper sash is clamped entirely within the hooked portion of glass stop 51, instead of being brought around and fastened tothe outside of glass stop 51 as formerly was done. The weather strip 52 is held in place by an angle clamp 54 which is attached to glass stop 51 by screws which pass down through the horizontal portion of the glass stop.

The top rail of the upper sash has a main sash member 55 and a glass stop 56 which is made S-shaped-in cross section as shown in Fig. 1, thus providing a positive stop for upward movement of the upper sash. Furtion members and the sill and lintel memther, this givesstifiness to the top rail and also provides a place for a casting 57 having an opening 58 to receive the end of the usual put in place, the weight chains 'arerun through the pulleys and attached to the sashes; bafiie 6 is then adjusted so that the space between bafile 6 and the short hook a of member 3 will be just wide enough to- .permit the upper sash to move freely. In the same way sash guide 7 is then adjusted to give the proper clearancebetween its sash guide and baflle 6 so that the lower sash can move freely but without rattling. Weight 11 can then be put in place and attached to the appropriate chain, and separator 9 can be attached in the manner which has already been described. Thereupon weight 10 is inserted and attached to its chain and cover plate 8 is slipped into place and attached.

It, is obvious that cover plateS can at any time be removed to give access to the weights, without disturbing the sashes or changing the adjustment of the opemngs 1n which they slide.

' If desired, 'baflie 6 can run down to contact with-ledge 18 of sill 13. I prefer, however, to insert a small casting shown in Fig.

"8 which permits me to square the lower end of baflle '6 so that both the baffles for a given window can be made identical, instead of demanding the necessity of making right and left hand members. inFig. 8 which is designated by numeral has its lower surface sloped to conform with the pitch of ledge 18. The upper surface has a portion 61 which will lie horizontal when the casting is in place, and an extension surface 62 which may slope up slightly to give'the casting strength. The

front of the casting corresponding to the I portion 62 is cut away to receive the short leg 4 of member 3. On the top of the casting there is provided a lug 63 which will serve as a stop to limit downward movement of the upper sash. 1 This casting is simply fill.

dropped into place beforethe bafile 6 is attached and will be held in place by bafl'le 6. It is to be understood that the foregoing example is intended for the purposes of illus-\ trationonly and that the same may bemodltied in manyparticulars without departing from the spirit of my invention.

What I claim-is:

l 1 A window frame comprising a sill member, a. lintel member, jambs, each of which comprises a partition member, interlocking joints formed between said part1- bers, and a casing surrounding each of said Z joints.

The casting shown said openings.

bination, a lintel and a sill, a jamb member on each side of the window frame having-a portion adapted to stand within the jamb, and interlocked joints between each such member and'the sill and lintel respectively, formed intermediate the planes of the front and rear jamb walls. 4

4. A sheet metal window frame comprising two jambs, a sill and a lintel, interlocking joints between said members at the corners of the frame adapted to cause the mem bers of each pair of interlocked members to assume positions at right angles to each other, and additional means for holding said members in interlocked position.

' 5. The method of building a window. frame which comprises the steps of fabricating the sill and lintel, each with notches spaced apart an equal distance, fabricating two corresponding jamb members each with notches spaced apart an equal distance and notches to form alrectangular frame, welding the interlocked members together, and building up the jamb walls about said jamb members. v

6. A window frame and sash construction comprisingtwo sashes, jambs having openings in their inner faces in which the sashes slide, means for adjusting the width of said openings, counterbalance weights for the sashes within the j ambs and a cover plate forming part of the inner face of each jamb at one side of and distinct from the jamb parts which vdefine said openings, which 7 cover plates are removable to give access to said weights without changing the adjustm'ent of the jamb members which define 7. A structure as defined in claim 6 in which each jamb contains two weights between which is a weight separator which may be removed without changing the 'adjustment of the jamb members which define.

the opening in the jamb face.

8. A window-frame and sash construction, comprising jambs, sashes adapted to slide in the jambs, means foradjusting the clearance between the sashes and the jambs,

Wil1(l is elosed and may be removed utter the window has been built into a finished well. I

9. in a window frame and sash construetion, the con'ibinzition of u sill and a sash. having a main sash frame meml. r adapted to eontaet with said sill and support :1 seat for the lower edge of a pane of glass, n n1em- 'ber adjustable in relation to said main sash 'l'rznne member adapted to cont-net with the sill and :1 glass stop having its ipper edge bent over and down to cover the edge of said adjustable member.

10. In a window frame and sash construction, the rombinirtionof two hook shaped meeting ruil members, a relatively flexible weather strip within one of said hooks and a shaped to reeeive the other hook to hold chunping strip within said first hook said weather strip in place.

ll. In u. window frame and snsh construetion,'the combination of e lintel having an opening to receive sush member, a main sash irun'ie member adapted to enter said opening and a glass stop of S-shaped cross section attached to such main member, with its lower opening turned away from the main member and s rpositio11ed as to Contact with the lintel to limit upward movement of the sash.

12. A structure as defined in claim 11 provided with a pole socket in the lower opening of said glass stop.

HARRY E. CAMPBELL. 

